Engine-cylinder.



PATENTED JULY 28 W. GIBBPRIBD. ENGINE CYLINDER.

APPLICATION FILED NOV. 8, 1907.

2 SHEETS-SHEET 1.

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PATENTED JULY 28, 1908.

W. GIEBFRIED. ENGINE CYLINDER.

APPLICATION FILED NOV. 8, 1907.

2 SHEETSSHBET 2. v

Jim 62 521 WILHELM GIEBFRIED, or SAARBRUCKEN, GERMANY, ASSIGNOR TO ananann'r &

- temped to prevent the exchange of the entire UNITE s'ra'rsrarhrrr GESELLSGHAFT MIT BESUHRANKTER HAFTPFLIOHT, OF SCHLEIFMUHLE, NEAR SnAR BRUGKEN, GERMANY.

No. s94,3 eo.

ENGINE-CYLINDER.

Patented 31113728, .1908

Application filed November a, 1907. serial ze. $01,287.

To all whom it may concem:

Be t known that I, WILHELM GIEBFRIED, a sub ect of the German Emperor, and residing at Pfahlerstrasse 9, Saarbri'lcken, Germany, have invented certain new and useful Improvements in Engine-Cylinders, of which the following is a specification.

The present invention relates to engines and an 1m orta-nt object is an improved cylinder for t e same.

Under certain circumstances there is considerable wear in the running surfaces of cylinders of large gas engines. in such a case the cylinders must be bored again and they must finally be replaced by new ones. As the casting of cylinders is a very difficult matter, it is exceedingly expensive to replace such a cylinder. It is therefore atcylinder by arran ing bushes within the same. Hitherto t at has generally been done b a special bush being set hot or by hydrau ic pressure in a cylinder of the customary construction, the bush being then fastened in any suitable manner by pins or the like inserted fromthe outside.

lNow the present invention consists in a special manner of arranging the bush in the cylinder, whereby substantial advantages are obtained.

In order that the invention may be clearly understood reference is made to the accompanying drawing in which one form of the new cylinder is represented by way of example in section. a

Figure 1 is a central longitudinal sectional view of my. improved cylinder; and, Fig. 2 is a central transverse sectional View thereof.

The cylinder consists of the two parts a, the bush 1) having an exterior flange d in the center, and a two-part annular member 0.

A special feature of the cylinder is, firstly, the manner in which the bush 6 is held by means of the flange between flanges oi'the two headieces a constituting the cylinder roper. lith this form of attachment of the bush, the substantial advantage is obtained that even if the joints should in themselves become loose, no Water can enter into the interior of the cylinder, because the hush which has been shrunk in the two cylindersections forms a perfect closure. Thus although the cylinder proper is divided in the center, its running or working face is nevertheless not divided, and the closure against water is practically perfect.

After the screws which connect the two headieces a and thebush b with one another ave been tightened, the twopart annular piece 0 is placed round the cylinder and is likewise screwed to the head-pieces. When that has been done, so far as tightness is concerned the cylinder corresponds exactl to cylinders of the old construction, in w ich interior and exterior casings are cast in one iece.

It will be observed that the invention is shown applied to a cylinder of the hollow wall type and that the flan es bolted to the annular flange d are forms on the exterior of the inrier wall of the cylinder, While the annular two-part member 0 forms a portion of the outer wall or-water jacket.

What I claim as In to secure by Letters r atent is 1. A cylinder of the type described cornprising a bush having an annular exterior ange, and a cylinder proper composed of two sections tig tly fittln over the respec tive ends of the bush and cited against the opposite faces of said flange, whereby the bush is rigidly fastened to the cylinder proper and covers the joints between the sections thereof.

2. In combination, ahollow-walled cylin der divided transversely into two sections midway its length, the inner wall of each sec; tion being provided with an outwardly invention and desire turned flange, and a bush fittedtightly in n the cylinder and extending across the transverse joint between the sections thereof, and

means exterior to the'hush for rigidiy attaching it to said flange.

A cylinder of vided transversely into two sections or head pieces, a bush fitted tightly in the cylinder and extending across the transverse joint hetween the sectlons thereof, means exterior to the house-en]. type dithe bush for rigidly connecting the bush and l the two sections of the cylinder together, for the purpose set forth. 4. A cylinder of the hollow wall ty e di- 5 vided transversely into two sections, t e inner Wall of each section being provided with an outwardly turned flange, and a portion of the outer wall adjacent said flanges being in sections and being removable, a bush fitted into the cylinder and provided with an eX- 10 ter nal flange bolted between the aforesaid flanges, for the purpose set forth.

In testimony whereof, I afiix my signature in the presence of two witnesses.

WILHELM GIEBFRIED. Witnesses:

THEODOR ENGELHARDT, WALTER HAUSING. 

